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Short Wave

The serious hunt for alien life

Short Wave

NPR

News, Life Sciences, Daily News, Astronomy, Nature, Science

4.76.5K Ratings

🗓️ 23 February 2026

⏱️ 13 minutes

🧾️ Download transcript

Summary

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens — with screensavers. It was a big moment in a century-long concerted search for extraterrestrial intelligence. So far, alien life hasn't been found. But for scientists like astronomer James Davenport, that doesn't mean the hunt is worthless. It doesn't mean we should give up. No, according to Davenport, the search is only getting more exciting as new technology opens up a whole new landscape of possibilities. So, today, we're revisiting our episode on the evolving hunt for alien life. 


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Transcript

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0:00.0

I bet this guy on the bar train one time, and I had my bass with me, and he goes, man,

0:04.2

what do you want to do? What's your dream? I'm Jesse Thorn on Bullseye Raphael Sidique. He's nominated for an Oscar. He played bass for Prince. And of course, he co-founded Tony, Tony, Tony. Uncle, I want to be in a band with my brother. That's on the next bullseye.

0:19.3

Find us in the NPR app at

0:20.8

maximum fun.org or wherever you get podcasts. You're listening to Shortwave from NPR.

0:29.7

When I was a teenager in the late 90s, I downloaded a special screensaver. It had lots of

0:35.2

pretty colors and graphs, but that's not why I wanted it.

0:38.8

My goal was to humbly contribute to humankind's search for intelligent life in the universe,

0:44.1

aka aliens. This effort is officially called the Search for Extraterrestrial Intelligence, or SETI.

0:51.9

The screensaver I downloaded, called SETI at Home, was part of a

0:55.9

large-scale community project to use people's everyday PCs to comb through radio signals that

1:00.9

hit Earth from space, mostly from stars. These signals have particular patterns. So if astronomers

1:10.6

find a signal that doesn't quite fit those patterns, it could mean some

1:14.1

intelligent life is sending them.

1:16.4

Within a few years, the SETI at Home Project recruited 3.8 million people.

1:21.1

I hijacked my parents' little Gateway 2000, and I absolutely cooked it, trying to contribute to what seemed like the thing, right?

1:29.1

It seemed like the one opportunity living in the middle of nowhere and sort of like rural

1:32.4

eastern Washington, like, oh, I can be part of this journey that humankind is on. It was

1:37.2

amazing. That's my friend James Davenport. He's an astronomer at the University of Washington,

1:41.7

and his focus is on stars. And I talked to him recently because, importantly, for this episode, he's a collaborator with the SETI Institute, a nonprofit research organization that combs through astronomical data in search of signs of life outside of Earth.

1:56.4

It's a search that goes way back, way before James and I took control of our family's computers,

2:08.2

in 1924, when many researchers were excited about Mars, and Mars's orbit was close to Earth,

2:13.3

making it a prime time to listen to signals from the planet. And so, an unconventional astronomer named David Todd convinced multiple radio stations in the U.S. and one in South

...

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